How to go in biotechnology field after 12th in medical stream? What to opt for?

I have done 12th this year in medical field
And want to go in biotechnology as a career..
What to do aftrr 12th for it
I have more intrst in biotech..
Is there any exam I have to give aftr 12th for it?
Answer me in detail please~ Asked by Mannat, On: Apr 30, 2013